diff --git a/lib/client.js b/lib/client.js
index c767373..42714e2 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -4,19 +4,19 @@ const errors = require('./errors')
 const transports = require('./transports')
 const utils = require('./utils')
 
-function lookupLink (node, keys) {
-  for (let key of keys) {
+function lookupLink (node, schemaKeys) {
+  for (let key of schemaKeys) {
     if (node instanceof document.Document) {
       node = node.content[key]
     } else {
       node = node[key]
     }
     if (node === undefined) {
-      throw new errors.LinkLookupError(`Invalid link lookup: ${JSON.stringify(keys)}`)
+      throw new errors.LinkLookupError(`Invalid link lookup: ${JSON.stringify(schemaKeys)}`)
     }
   }
   if (!(node instanceof document.Link)) {
-    throw new errors.LinkLookupError(`Invalid link lookup: ${JSON.stringify(keys)}`)
+    throw new errors.LinkLookupError(`Invalid link lookup: ${JSON.stringify(schemaKeys)}`)
   }
   return node
 }
@@ -34,8 +34,8 @@ class Client {
     this.transports = options.transports || [new transports.HTTPTransport(transportOptions)]
   }
 
-  action (document, keys, params = {}) {
-    const link = lookupLink(document, keys)
+  action (document, schemaKeys, params = {}) {
+    const link = lookupLink(document, schemaKeys)
     const transport = utils.determineTransport(this.transports, link.url)
     return transport.action(link, this.decoders, params)
   }